Cut the eggplant and tofu into bite-sized pieces.
Pat dry the tofu with a kitchen towel to remove excess moisture.
Heat some vegetable oil in a pan and fry the tofu until golden brown.
Remove the tofu from the pan and add the eggplant. Stir-fry the eggplant.
When the eggplant is cooked, return the tofu to the pan and pour in the sauce.
Simmer until the sauce is reduced and thickened, then transfer to a plate to serve.